Question

Given are five observations collected in a regression study on two variables. \begin{tabular}{|c|c|c|c|c|c|} \hline $x_i$ & 2 & 6 & 8 & 12 & 20 \\ \hline $y_i$ & 9 & 18 & 6 & 25 & 21 \\ \hline \end{tabular} (a) Develop a scatter diagram for these data. (b) Develop the estimated regression equation for these data. $\hat{y} = 9.7 + 0.7x$ (c) Use the estimated regression equation to predict the value of $y$ when $x = 20$. 23.7

          Given are five observations collected in a regression study on two variables.
\begin{tabular}{|c|c|c|c|c|c|}
\hline
$x_i$ & 2 & 6 & 8 & 12 & 20 \\
\hline
$y_i$ & 9 & 18 & 6 & 25 & 21 \\
\hline
\end{tabular}
(a) Develop a scatter diagram for these data.
(b) Develop the estimated regression equation for these data.
$\hat{y} = 9.7 + 0.7x$
(c) Use the estimated regression equation to predict the value of $y$ when $x = 20$.
23.7